Category: cronJ

Feed: CronJ. Author: Priyanka Rai; With the introduction of ES6, which is the 5th version of scripting language specification standards specified by EcmaScript International, few of the very important concepts came. Before ES6, JavaScript supported global scope and local scope only. The global scope here means variables declared outside any function are accessed from anywhere in JavaScript code whereas local scope or functional scope of any variable means that any variable which is declared in a function. The variable which is declared in a function will only be accessed in that particular function. ES6 brought the concept of “block scope” ... Read More

Feed: CronJ. Author: Ayush Goel; As discussed in my last blog, there are 2 types of databases SQL and NoSQL. So in this blog, we will be looking at one type of NoSQL database that is MongoDB. MongoDB is an example of a document-type database, which means it stores data in JSON-like documents. One of the biggest reasons for its popularity is the data model used is a highly elastic one that allows us to combine and store data of multivariate types. MongoDB Architecture Let’s first discuss the architecture of MongoDB. A typical MongoDB architecture has 3 parts- Database: A database ... Read More

Feed: CronJ. Author: Pavan Kalyan; Today we will talk about javascript variable scopes, how ECMAScript has defined the variables, and variable hoisting. Understanding Javascript Variable Scope and Hoisting Well, we know how the scopes of the programming language work, but it’s not the same for all programming languages. In javascript, the variable scope and its hoisting are quite different. Let’s take an example – var car = “Mercedes” // variable is defined in the global scope function car_name () { // function car = “BMW”; // this is a local scope but the variable car is global variable var car ... Read More

Feed: CronJ. Author: Vignesh M; AI is been in our imagination for the last 40 50 years.In fact, from all the way from 2001 Space Odyssey to even like Ex Machina, there’s been a lot of movies about our fascination with AI.Unfortunately, that’s been a very negative twist around AI because ultimately all those movies are about the machines turning on humans and ultimately killing them. So I would like to offer a more optimistic outlook about AI. But it’s clear that this is something that’s really caught our imagination.The other thing that was clear was that this is all ... Read More

Feed: CronJ. Author: Vignesh M; Artificial intelligence is not a new technology. We’ve been doing R&D; in AI for over 60 years and just in the last two or three years it’s exploded into public consciousness. So much so that you need augmentation or stop action photography in order to resolve the blur of events. Manufacturing is fundamentally about manipulating atoms and molecules. And intelligence drives manufacturing whether you’re chipping Flint or bone or soldering or welding or 3d printing, it’s all about improving our knowledge of how to manipulate atoms and molecules. Here are a hundred startups in AI ... Read More

Feed: CronJ. Author: Manas Yadav; You should have come across the design pattern known as MVC while building your application. Today we will unravel the MVC Architecture and see how can we implement it in Node JS using the Node express framework. The purpose is to only make the reader familiar with the flow of our project when we use this architecture. So let’s start with some basic overview of this design pattern. What does MVC mean? MVC stands for Model-View-Controller and it is used to divide our application into 3 categories which are connected with each other. We use ... Read More

Feed: CronJ. Author: Anurag Jaiswal; As we discussed ICMP as FeedBack Messaging & Error Control in our previous Blog. ICMP is also used for Request and Reply messages. In FeedBack Messaging and Error Handling, the flow of ICMP packets is in one direction. In Request and Reply, Sender should send a request packet and get an ICMP reply packet either from the receiver or router in the way. Request and Reply messages are used in different ways. Request and Reply Message Types : Echo request and reply Router Solicitation and advertisement TimeStamp request and reply Network mask request and reply ... Read More

Feed: CronJ. Author: Vignesh M; Welcome to CronJ’s Artificial Intelligence Series Part – 1 Deep Learning. Neural Networks are good for learning lots of different types of patterns. To give an example of how is it work imagine you had a four-pixel camera. So not four megapixels, but just four pixels. And it was only black and white. And you wanted to go around and take pictures of things and determine automatically then whether these pictures were solid, all white or all dark image, vertical line or a diagonal line or a horizontal line? This is tricky because you can’t ... Read More

Feed: CronJ. Author: Dilip Kumar Maurya; Chat messaging or Facebook messenger is a messaging app or platform. Now I am going to build a chat messaging service system design that will have the following features. Below are the features that I would like to include in my application. One to One Chating. Online / Sent / Read updates. Sending picture or other files. Database ( For database I’m using Cassandra). Security. Distributed Cache ( For this I’m using REDIS). Fig 1. Basic Structure of Application From here I will take each and every scenario of the application and will explain ... Read More

Feed: CronJ. Author: Pavan Kalyan; The title of this blog ‘Histogram Of Oriented Gradients(HOG): Calculating Image Features‘ might be a little intimidating but don’t worry, we will understand this step by step. I must tell you that it holds great importance in image processing. You must have heard of “Features”. So what are Features?? Every object has some features by which we can say that this feature belongs to that type of object. For example- Zebra have black and white stripes, Rhinoceros have a horn, etc. So these strips of zebra and horn of Rhino are that specific feature that ... Read More